[RFC] Update minimum make version to 3.81

["Paul E. Murphy" <murphyp at linux dot vnet dot ibm dot com>]

This would bump the project from 3.79 to 3.81.  The primary
motivation is to enable usage of the eval function.  3.81
was released in 2006.

	* configure.ac: Update minimum make version to 3.81.
	* configure: Regenerate
	* INSTALL: Update comments about minimum make version.
	* manual/install.texti: Likewise.
---
 INSTALL             | 4 ++--
 configure           | 2 +-
 configure.ac        | 2 +-
 manual/install.texi | 4 ++--
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/INSTALL b/INSTALL
index ec3445f..9ebd05c 100644
--- a/INSTALL
+++ b/INSTALL
@@ -343,12 +343,12 @@ Recommended Tools for Compilation
 We recommend installing the following GNU tools before attempting to
 build the GNU C Library:
 
-   * GNU 'make' 3.79 or newer
+   * GNU 'make' 3.81 or newer
 
      You need the latest version of GNU 'make'.  Modifying the GNU C
      Library to work with other 'make' programs would be so difficult
      that we recommend you port GNU 'make' instead.  *Really.*  We
-     recommend GNU 'make' version 3.79.  All earlier versions have
+     recommend GNU 'make' version 3.81.  All earlier versions have
      severe bugs or lack features.
 
    * GCC 4.7 or newer
diff --git a/configure b/configure
index 19a4829..c0d97e3 100755
--- a/configure
+++ b/configure
@@ -4555,7 +4555,7 @@ $as_echo_n "checking version of $MAKE... " >&6; }
   ac_prog_version=`$MAKE --version 2>&1 | sed -n 's/^.*GNU Make[^0-9]*\([0-9][0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    3.79* | 3.[89]* | [4-9].* | [1-9][0-9]*)
+    3.8[1-9]* | 3.9* | [4-9].* | [1-9][0-9]*)
        ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
     *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
 
diff --git a/configure.ac b/configure.ac
index 123f0d2..3203157 100644
--- a/configure.ac
+++ b/configure.ac
@@ -955,7 +955,7 @@ AC_CHECK_PROG_VER(LD, $LD, --version,
 AC_CHECK_TOOL_PREFIX
 AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
   [GNU Make[^0-9]*\([0-9][0-9.]*\)],
-  [3.79* | 3.[89]* | [4-9].* | [1-9][0-9]*], critic_missing="$critic_missing make")
+  [3.8[1-9]* | 3.9* | [4-9].* | [1-9][0-9]*], critic_missing="$critic_missing make")
 
 AC_CHECK_PROG_VER(MSGFMT, gnumsgfmt gmsgfmt msgfmt, --version,
   [GNU gettext.* \([0-9]*\.[0-9.]*\)],
diff --git a/manual/install.texi b/manual/install.texi
index 79ee45f..93037fa 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -385,12 +385,12 @@ build @theglibc{}:
 
 @itemize @bullet
 @item
-GNU @code{make} 3.79 or newer
+GNU @code{make} 3.81 or newer
 
 You need the latest version of GNU @code{make}.  Modifying @theglibc{}
 to work with other @code{make} programs would be so difficult that
 we recommend you port GNU @code{make} instead.  @strong{Really.}  We
-recommend GNU @code{make} version 3.79.  All earlier versions have severe
+recommend GNU @code{make} version 3.81.  All earlier versions have severe
 bugs or lack features.
 
 @item
-- 
2.4.11